Well, I think you need to download the music player, video player, and yes themes from the play-store or if you think something more fishy things going onto your device try contacting the cyanogenmod developer forum. They are going to guide you good enough on this !!

ID4me is an internet service that enables its users to log in to many different internet services with one account. This is also known as "single sign on".

Unlike existing global single sign on solutions like the ones from Google or Facebook, ID4me does not track and analyze the internet surfing habits of its users. ID4me will make sure that the surfing habits stay secret.

Also, ID4me does not belong to an enterprise. It is an open standard that is maintained by a nonprofit organization. Anyone who wants to can participate. This way the users can chose freely between different ID4me providers and can also change the provider anytime.